Which NEC section addresses sensor (automatic) control of lighting in a residential bathroom?

Which NEC section addresses sensor (automatic) control of lighting in a residential bathroom?

• A. 210.70(A)(1) Exc 2
• B. 210.8(A)(1)
• C. 210.8(B)(1)
• D. 210.70(A)(2)

Answer: (A)

The rule being tested is that bathroom lighting in a dwelling unit can be automatically controlled. Normally, lighting outlets in a dwelling must be controlled by a wall switch. However, there is an exception to that requirement that specifically allows automatic control for bathroom lighting, such as by an occupancy sensor. This exception is found in 210.70(A)(1) as Exc 2. That’s why it’s the best answer: it directly addresses allowing sensor (automatic) control in a residential bathroom rather than requiring a wall switch. The other sections pertain to related but different topics (for example, GFCI protection for bathroom receptacles) and do not cover automatic lighting control, so they don’t fit the question.

The rule being tested is that bathroom lighting in a dwelling unit can be automatically controlled. Normally, lighting outlets in a dwelling must be controlled by a wall switch. However, there is an exception to that requirement that specifically allows automatic control for bathroom lighting, such as by an occupancy sensor. This exception is found in 210.70(A)(1) as Exc 2. That’s why it’s the best answer: it directly addresses allowing sensor (automatic) control in a residential bathroom rather than requiring a wall switch.

The other sections pertain to related but different topics (for example, GFCI protection for bathroom receptacles) and do not cover automatic lighting control, so they don’t fit the question.